Collar for lamps



(No Model.) I A. GOTTSOH-ALKV,

COLLAR FOR LAMPS. No. 382,605; Patented May 8 1888;

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Nv FIBERS Fholo'Liihcgmpher, Washington, D- G To all whom it mayconcern:-

Be it known that I, ANDREW GoTTscHALK,

UNITED STATES PATENT QFFICE.

ANDREW GOTTSOHALK, OF MARTINS FERRY, OHIO.

COLLAR FOR LAMPS.

SPECIFICATION forming part of Letters Patent; No. 382,605, dated May 8,1888. i

Application filed June 9, 1887." Serial No. 240,744. (No model.) I

of Martins Ferry, in the county of Belmont and State of Ohio, haveinvented a new and useful Improvement in'Oollars for Lamps, Ste. and Ido hereby declare the following to be a full, clear, and exactdescription thereof.

The object of my invention is to provide an improved collar forthe necksof oil reservoirs or founts of lamps, the construction being such thatthe collar is held very securely in place without the use of the cementheretofore commonly employed, and that oil is prevented from leakingaround the collar. My invention is illustrated in the accompanyingdrawings, in which- Figure 1 is a vertical sectional view of the lampand collar when connected. Fig. 2 is a horizontal section on thelinexxofFig. 1. Fig. 3 is a side elevation of the collar detached.

My invention consists in a collar having an.

internal screw-thread, by which it is adapted to be screwed on the neckof thelamp, the collar being confined on the neck by having portions ofits circumference forced into recesses lar projecting flange or rim, 4.When screwed in place, the rim 4 is pressed against the body of thefount very tightly and makes an oiltight joint. When thus fittedtogether, the

cheaply applied, without the necessity for the use of cement, it is heldfirmly to the lamp,

and is not in danger of being loosened or unscrewed when the burner istaken off. The

fact that the collar is not locked by a compres- 5 sion of aiportion ofits body in the recess of the lamp-fount until after the collar has beensecured in place enables a very tight joint to be made between the baseof the collar and the fount, prevents loose motion of the collar, andaffords security against leakage of oil.

I do not claim, broadly, a lamp having a screw-collar, nora lamp havinga screw-collar with an annular flange at its base, since these have beenknown before; but

What I claim is-- A lamp whose neck is threaded and pro vided with anindentation or recess, 5, in combination with a threaded-collar of softmetal screwed on the neck and having a portion of 6 0 its body forcedinto the recess after the collar has been screwed on the neck, wherebythe collar is locked, substantially as and for the purposes described.

In testimony whereof I have hereunto set my

